Direct (nonstop) flights from Boston to Seattle
3 airlines fly nonstop from Boston Logan International Airport (BOS) to Seattle Tacoma International (SEA). It's 2,494 miles (4,014 km), about 6h 23m in the air. Operated by Alaska Airlines, JetBlue Airways, Delta Air Lines.
Alaska Airlines
JetBlue Airways
Delta Air Lines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AS
Alaska Airlines
B6
JetBlue Airways
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Boston to Seattle with one stop · direct emits 381 kg CO₂ per passenger
Looking for the return flight?
SEA → BOS: Flights from Seattle to BostonOther direct flights from Boston
Direct flights from Seattle (SEA)
Frequently Asked Questions
How long is the direct flight from Boston to Seattle?
A nonstop flight from Boston (BOS) to Seattle (SEA) takes approximately 6 hours and 23 minutes. The distance is 2,494 miles (4,014 km).
Which airlines fly nonstop from Boston to Seattle?
3 airlines: Alaska Airlines, JetBlue Airways, Delta Air Lines.
Is there a nonstop flight from Boston to Seattle?
Yes. 3 airlines: Alaska Airlines, JetBlue Airways, Delta Air Lines.
How far is Boston from Seattle?
The flight distance from Boston to Seattle is 2,494 miles (4,014 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What type of aircraft flies from Boston to Seattle?
At 6h 23m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
What is the carbon footprint of a flight from Boston to Seattle?
Roughly 381 kg CO2 per passenger one-way. That's about the same as driving 1,905 km.
Is the return flight from Seattle to Boston also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Boston to Seattle?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Boston Logan International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.